File:22-Kalliope-Linus.jpg

22 Kalliope and satellite Linus are currently the lowest numbered binary asteroid with components of roughly 166km and 28km.

This is an Adaptive optics (AO) image of the binary system taken by the W.M. Keck II telescope in 2010.

Franck Marchis blog: Keck AO Observations: Multiple Asteroid Systems

2010

Franck Marchis and his team using the W. M. Keck Observatory

This image is a faithful digitisation of a unique historic image, and the copyright for it is most likely held by the person who created the image or the agency employing the person. It is believed that the use of this image may qualify as non-free use under the Copyright law of the United States. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content for more information. Please remember that the non-free content criteria require that non-free images on Wikipedia must not "[be] used in a manner that is likely to replace the original market role of the original copyrighted media." Use of historic images from press agencies must only be of a transformative nature, when the image itself is the subject of commentary rather than the event it depicts (which is the original market role, and is not allowed per policy). Fair use //en.wikipedia.org/wiki/File:22-Kalliope-Linus.jpg true

If this tag does not accurately describe this image, please replace it with an appropriate one. Fair use true

This image qualifies for fair use in the articles 22 Kalliope, Linus (moon), and List of Solar System objects by size since:

1) Illustrates the significance of the lowest numbered asteroid known to be binary.

2) No freely available alternative to this unique image since Adaptive optics are beyond the means of most telescopes, and thus not easily reproducible.

3) Does not make the work as a whole less valuable to the copyright holder since the image was created for scientific purposes.

For commercial use of this image please contact Keck Observatory at http://keckobservatory.org/contact